<ui:composition xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core">
    

	<h:form>
		<h:commandButton action="#{serviceMB.execute}" value="invoke service" />
	</h:form>
	
  
</ui:composition>